Sash-lock.



A. E. BLAKE.

SASH LOCK.

APPLICATION FILED OUT. 30, m1.

Patented May 14, 1912.

2 SHEETS-SHEET 1.

wig 1 2% wvemtoz B. BLAKE.

, SASH LOOK.

APPLICATION FILED OUT. 30, 1911 Patented May 14, 1912 2 SHEETSSHBET 2. 11? I QXFL-bmc was tendency toward the bar and *a-toothed wyindow sash are so held together as to pre- State of New Hampshire, have invented a new and useful Sash-Lock, of which the ratchet bar, but which latch may be moved UNITED STATES PATENT OFFICE.

ALBERT E. BLAKE, OF ROCHESTER, NEW HAMPSHIRE, ASSIGNOR OF ONE-THIRD T0 JAMES L. BLAISDELL AND ONE-THIRD TO FRANK H. BLAKE, BOTH OF ROCHESTER,

NEW HAMPSHIRE.

Specification of SASH-LOCK.

Application f led October 30, 1911. Serial No. 657,653.

To all whom it may concern:

Be it known that I, ALBERT E. BLAKE, a citizen of the United States, residing at Rochester, in the count-y of Strafford and following is a specification.

This invention has reference to improve ments in sash locks, and its object is to provide a lock which in its ordinary operation will permit the opening of the window sash to a certain extent, but not enough to allow the reaching of the sash look from outside the window, and whereby the sash when closed may be so secured as to prevent rattling, the whole operation being under the control of a single lever in position to be readily manipulated by an operator.

In accordanceiwit-h-the present invention there is provided a ratchet bar having stop members at the ends, such ratchet bar being made fast to one of the sash, usually the upper sash, and to the other sash, usually the lower sash, there is secured a casingor support carrying a pawl having a constant latch normally in position to be in thepath of the stop members on the two ends of the out of the path of the stop members, and there is also provided a cam lever or actuator for both the pawl and the latch, where by the pawl may be moved out of engagement with the ratchet bar when desired and the latch may be moved in a direction to draw the sash closer together when the upper sash is raised and the lower sash is lowered to the limit-s of their travel in the respective directions, whereby the two vent rattling.

The invention will be best understood from a consideration of the following detailed description takenin connection with the accompanying drawings forming a part of this specification, with the understanding, however, that while in the drawings there is shown a practical embodiment of the invention, the latter is by no means limited to any exact conformity with the showing of the drawings, for it is susceptible. of various changes and. modifications which do not mark a material depart' lre t-ive view of a portion ofeach of two sashes of a window and a small portion of the window frame, with the invention applied. Fig. 2 is a vertical section on the line 2-2 of Fig. 1, considering the window as upright, with the parts in position to release either sash for movement toward the open position. Fig. 3 is a section similar to Fig. 2 but showing the parts in the locking and antirattling position. Fig. 4 is a section similar to Fig. 3 but omitting the sash and the anti-rattling latch and showing a portion of the ratchet bar in dotted lines. Fig. 5 is a view similar to Fig. abut with the section taken between the thumb lever and the pawl. Fig. 6 is a section on the line G-6 of Fig. 3 with the sash and parts carried thereby omitted. Fig. 7 is a perspective view of one end of the ratchet bar.

Referring to the drawings, there is shown a portion 1 of a window frame and a portion each of an upper sash 2 and a lower sash 3, all of ordinary construction, and the showing of the drawings may be taken as typical of any suitable window sash and window frame, or of any similar devices where the invention would be applicable. The upper sash 2 and the lower sash 3 are so named simply because windows are customarily placed in an upright position, or substantially vertical, with one sash higher than the other, but this does not preclude the use of the sash lock in constructions where the parts to be locked together may move in other directions than up and down, but for simplicity 'of description reference will be made only to ordinary window sash designated as upper and lower sash, respectively.

i There is provided a ratchet-bar 4 of such length as may be found desirable, and usually of considerably less length than the length of the window sash, especially the upper window sash, for it is customaryto secure the ratchet bar l to the upper sash on one of the sidemembers thereof. The ratchet bar 4- has the shoulders 5 of the ratchet teeth thereof directed downwardly when applied to an ordinary window sash, and these shoulders may be set at an in cline, as indicated in the drawings, At each end the ratchet bar has lateral extensions from the salient features of the invention:

In the draw1ngs:F1gure 1 a perspeci (j, 7, respectively, and also at each end there provided a passage 8 for a screw 9 or other suitable means for attaching the 110 ratchet bar to the window. sash along one of the stiles in such manner that one end of each of the lateral extensions (5 and 7 project beyond the stile on the glass side there- The lateral extension 6 of the ratchet bar is adjacent to but spaced a short distance from the -meeting rail of the upper sash, while the end of the lateral extension 7 on the glass side of the stile carrying the ratchet bar has applied thereto a buffer 10, which in the particular arrangement shown iii the drawing may be a rubber ring of appropriate size, but any suitable buffer may be employed, the purpose of this buffer appearing hereinafter.

Associated with the ratchet bar 1 is a locking member designed to be attached to the meeting rail of the lower sash 3, and this locking member is provided with a casing 11, which in the particular showing of the drawings is of general rectangular shape and open at the top, thatis, at the part uppermost when the casing is in position on the window sash. At the bottom of the easing there are outstanding flanges 12 on opposite sides, through which pass screws 13 or other suitable fastening devices, whereby the casing is secured to the meeting rail of the -sash. On opposite sides of the casing are upstanding ears 1 1, the expressions of position being with reference to the installed sash lock. The cars 1-1 support the ends of a pivot pin 15 extending between these ears, aml this pivot pin has mounted thereon a latch lever or eccentric 16 provided with a thumb piece 17 outstanding radially with reference to the pivot pin, while. the body of the. cam member 16 has hubs 18, 19, respectively, formed on opposite sides thereof eccentric to the pivot pin 15, while the manipulating eccentric memberlti is formed at one point with a tooth 20 adapted to engage one end wall of the casing .11 to thereby limit the movement of the eccentric 16 about the pivot pin in a direction wherein the thumb piece 17 is moved toward the upper sash, while when the thumb piece is moved in the opposite direction such movement is limited by the ultimate engagement of the thumb piece 17 with the upper edge of the other end member of the casing 11, these twopositions being well illustrated in Figs. 2, 3 and 4.

Mounted on the hub 18 is a latch 21 having one end 22 enlarged and provided with a pass-.t c snugly and yet freely fitting the hub 18. The other end of the latch is formed with an angle finger 23 adapted to engage that end of the lateral extension (3 of the ratchet bar-'4 projecting from the stile of the upper sash on the glass side thereof.

The hub 19 carries a pawl 24-, the latter being enlarged and provided with a passage into which the lmb 19 snugly yet freely fits.

confine a spring 29 therebetween, this spring tending constantly to move the pawl 2 1 in a direction to bring the tooth 25 into engagement with the teeth of the ratchet bar 4.

Since the actuating lever or cam 16 is movable about the pin 15 but the hubs 18 and 19 are eccentric to theaxis of movement of the manipulating cam. member 16,

the latch 21 and pawl member-21 will haig'g imparted to them a movement relative to.

the pin 15 due-to the eccentricity of the respective hubs 1S and 19 and the relation of the hubs l8 and 19 one to the other is suchthat when the manipulating lever or cam 16 is moved in a direction wherein the thumb piece 17 travels toward the ratchet bar the pawl 24: under the action of its spring 28 will move so that the tooth 25 will be in the path of a tooth of the ratchet bar t, while the latch -21 is moved in the opposite direction,'that is, in the direction to cause the finger 24C to engage that face of the end of 'the lateral extension 6 in'its path remote from the casing 11, wherefore the ratchet bar and the upper-sash are moved toward the lower sash orthe lower sash is moved toward the-upper sash, or both sashes are moved together, so that the meeting rails of the two sashes are brought into close-contact. and rattling is prevented. On the'movement of the man1pulating cam or lever- 16 in the opposite direction, that is, with the thumb piece 17 traveling away from the ratchet bar, the,

eccentricity of the hubs 18 and 19 cause the latch 21 to move in a direction to carry the finger 23 away from the lateral extension 6 and the'pawl 21 is carried away from the ratchet 4. This last movement of the pawl 21 is brought about by the engagement of one side of the thumb piece 17 with a shoulder 29 formed on the pawl 24: at the end controlled by the spring 28, so that when the actuating cam 16 is moved in the direc tion just described, the spring 28 is compressed and the teeth 25 is carried out of the path of the teeth of the ratchet mem bcr. whereby either the upper sash may be lowered or the lower sash raised without iuterforem-e, although as soonas the finger piece 17 is released from the manipulating pressure, the spring 28 will return the pawl 21- to a position where its tooth 25 is in the path of the teeth of the ratchet member 4 It it be assumed that the parts are in the ween the lateral extensions (5 and. 7.

position shown in- Figs. 1 and 3, and it be desired to lower the upper sash or raise the lower sash, the finger piece 17 is manipulated to turn the cam 16 to move the finger 23 away from engagement with the lateral extension 6 and the pawl 24 so that its tooth 25 is no longer in the path of the teeth of the ratchet member 4. Now, the lower sash may be raised or the upper sash lowered, or both may be moved to any desired extent within the range of the length of the ratchetmember 4. Let it be assumed that the upper sash is to be lowered. If the distance of lowering be less than the length of the ratchet member 4, then on the release of the manipulating thumb piece 17, the pawl tooth 25 will move into engagement with an appropriate tooth of the ratchet tending members 6 and 7, for as soon as the a latch 21 is brought into engagement with the buffer 10 of the lateral extension 7 its link is moved into contact with the corresponding end of the casing 11 and further movement of either sash one relative to the other is stopped, If a greater range of movement is desired, the latch 21 is turned on the hub 18 until the latch rests on the front or inner end of the casing 11, when the other sash may be moved to carry the tooth 25 out of the range of the teeth of the ratchet bar and either sash may be raised or lowered to the full extent. So long, however, as the latch 21 remains in the normal position illustrated in Figs. 1, 2 and 3, the total liinitof movement of either sash, or the sum of the movements of both sashes together is determined by the distance bp- 1 the upper sash be lowered to any extent within the range of the length of the ratchet member 4, the sash may be raised by raising the lower sash which will carry the upper sash to the upper limits of its travel, and then the lower sash may be lowered to the lower limits of its travel, the tooth 25 riding idly over the teeth of the ratchet bar 4 and when both sashes are in closed position, then the thumb piece 17 may be moved toward the ratchet bar, thereby through the latch 21 drawing the two sashes together at the meeting rails. The cam 'liulis 18 and 19 are so related to each other and to the parts carried thereby that when the thumb piece 17 has reached the limit of its travel toward the ratchet bar, the pawl 2st is seated firmly against the ratchet bar and the latch 21 is in firm engagement with the extension 6 with the meeting rails of the two sashes in contact and the hub 18 on approximately dead center with the pin 15 and the point of engagement of the finger 23 and lateral extension 6, so that the parts are effectively locked against movement except by a manipulation of the thumb piece 17.

The device is both a sash lock and a sash holder both under the control of a single 'mani ulatin means and bkee in the o a a length of the ratchet bar 4 within suitable limits, the device is subs tantially'burglar proof, so far as reaching thevsash lock from the outside of the window is concerned, unless a burglar should break the glass.

The device comprises but few parts, all of which are readily manufactured and easily assembled, and the construct-ion is such that these parts are not liable to injury or breakage under the normal conditions of use.

What isclaimed is 1. In a sash lock, a latch member carried by one sash, a coacting member carried by the other sash, an adjusting member carried by the first named sash, a coacting means for the adjusting member carried by the second-named sash, and a common manipulating means for the latch member and the adjusting member carried by the first named sash.

2. A sash lock comprising a ratchet bar having lateral extensions at the ends and adapted to be attached to a sash, and a co-- acting member adapted to be attached to the other sash, said coacting member comprising a pawl having a normal tendency toward the ratchet bar when in installed position, a sash locking latch normally in 0 the path of-the lateral extension of the ratchct'bar when in installed position, and a manipulating member connected to both the pawl and the latch and adapted to actuate the pawl and latch in opposite directions. 5

3. ln a sash lock, a ratchet bar adapted to be attached to a sash and provided with spaced lateral extensions, a supporting and holding member adapted to beattached to a companion sash, a manipulating cam 120 member jourmilod in the supporting member and provided with eccentric hubs on opposite sides, a i normally constrained pawlmember mounted on one of the hubsin position to engage the teeth of the ratchet bar, 125 and a. latch nu-mbcr mounted on the other hub omelcam member and having one end in the path o't'thc lateral extension of the ratchet bar. r

4. In a sash lock, aratchet bar adapted to. 130

be attached to a sash and provided with spaced lateral. extensions, a supporting and holding member adapted to be attached to a companion sash, a manipulating cam member journaled in the supporting member and provided with eccentric hubs on opposite sides, a uni-malty constrained pawl member mounted on one of the hubs in position to engage the teeth ot the ratchet bar, and a latch member mounted on the other hub oi" the (-am mel'ube and having one end in the path of the lateral extensions of the ratchet bar, the pawl member being provided with an extension in the path of the manipulating member in one direction of movement of the latter.

5. A sash lock comprising a ratchet bar with terminal lateral extensions, and a coacting member comprising a casing, a journal pin therein, a. cam member on the pin with oppositely directed eccentric hubs and also having an outstanding manipulating portion and a stop tooth each in'position to engage the casingg'a pawl member on one of the hubs having a tooth extension and a shoulder, a spring normally constraining the pawl into engagement with the ratchet teeth, and a latch on the other hub provided with a .finger normally in the path of the lateral extensions of the ratchet bar and adapted to engage over one of said extensions.

6. 111 a sash fastener, spaced stops on one sash, and a limiting member on the other sash in position to engage the stop members, said limiting member and the sash carrying it having a range of n'lovcmcntlimited in extent by the spacing of said stop members, and the limiting member also having a range of movement withrespect to one of the stops substantially perpendicular to the first named movement.

7. In a sash fastener, spaced stops on one sash and a limiting member on the other sash in position to engage the stop members, said limiting member and the sash carrying it having a range of movement limited by the spacing of said stops, and said limiting member being provided with a mounting in which it is movable in a direction substantially perpendicular to the direction of movement of the sashes and in which it is movable on an axis substantially erpendicular to the movement of the limiting member with respect to the sash carrying it and with respect to its movement between the stops.

8. In a sash lock, spaced stop members adapted to be secured to one sash, a coacting member adapted to be secured to the other sash in position to engage either of the stop members to restrict the movement of either sash, and a manipulating member for the coacting member for moving the same in a direction substantially perpendicular to the movement of the sash to cause the coacting member to engage one of the stop members to bring the sash into engagement one with the other, the said coactin member being mounted on the manipulating member for free movement relative thereto to carry it out of position to engage either stop member.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two Witnesses.

ALBERT E. BLAKE. lVitnesses:

FRANK I. RICHARDS, FRANK WHITE. 

